 if [ ![-e recommendations_new.txt ] ]
    then
      touch  recommendations_new.txt
 fi  


awk 'BEGIN{} {if(match($0,"^([0-9]{1,11})\,([0-9]{1,11})\,(([1-9]{1}\d*)|(0{1}))(\.\d{0,16})") != 0){print $0}}' recommendations.txt  > recomemndation_new.txt




#hile read line 
#do  
#  echo $line >> recommendations_new.txt
#one 

